Fuel-saving appliance.



H. F. NEHR. FUEL SAVING APPLIANCE.

APPLICATION FILED APR.13, 1910.

Patented Jan. 17,1911.

IN l/EW T0}? JferrrzazzZ UVe/zr WITNESSES HERMAN F. NEHR, OF RUTHERFORD,NEW JERSEY.

FUEL-SAVING APPLIANCE.

Specification of Letters Patent.

Patented Jan. 17, 1911.

Application filed April 13, 1910 Serial N0. 555,239.

To all whom it may concern:

Be it known that I, HERMAN F. NEHR, a citizen of the UnitedStates, and aresident of Rutherford, in the county'of Bergen and State of New Jersey,have invented certain Improvements in Fuel-Saving Appliances, of whichthe following is a specification.

This invention relates to certain improvements in that class of fuelsaving appliances which are especially designed and adapted forinsertion within the fire boxes of stoves and furnaces in position abovethe grates thereof so as to promote the combustion of the fuel thereinand to assure the most desirable positioning of such fuel during combustion, with respect to the heating surfaces, and the object of theinvention is to provide an appliance of this general character of asimple and comparatively inexpensive nature and of a strong and durableconstruction which shall be capable of ready application to furnaces andstoves of different kinds and styles. I

The invention consists in certain novel features of the construction,and combinations and arrangements of theseveral parts of the improvedfuel saving appliance, whereby certain important advantages areattained, and the appliance is rendered simpler, less expensive, andotherwise better adapted and more convenient for use, all as will behereinafter fully set forth. The novel features of the invention-will becarefully defined in the claims.

lri order that my improvements may be the better understood, 1 will nowproceed to describe my invention with reference to the accompanyingdrawings, wherein- Figure 1 is a sectional view taken centrally throughthe fire box of a furnace provided with my improved fuel savingappliance; Fig. 2 is a vertical section taken through the applianceremoved from the furnace; Fig. 3 is a plan view of the applianceconstructed as shown in Figs. 1 and 2, and Fig. 4 is a side elevationillustrating a modified formation of the appliance comprised in mypresent invention. 1

Referring first to Figs. 1, 2'and 3, 1 represents a stove or furnace ofany approved kind, having a fire box 2, and 3 represents a being soformed and proportioned as to assure its operation, when in said firebox, to spread the fuel contained therein evenly around the sides of thefire boxin the annular space 5 surrounding the appliance.

As herein shown, the improved fuel saving appliance is formed from castmetal or the like with tapered or conical side walls 7 approaching thevertical plane so inclined that the lower part of the annular spaceintervening between said side walls and the walls of the fire box 2 willbe of less width than the upper part thereof. The appliance is closedat, its upper part by an arched roof portion 10 while its lower part isopen, as clearly. shown in F ig. 2, being provided with an annularcircumferential flange 9 adapted to fit snugly against the grate bars 3.The sloping or conical side Walls 7 of the appliance are provided withelongated apertures. '8, adapted for the passage of air and ashes insuch a way as to promote the combustion of the fuel in the annular space5 surrounding the appliance within the fire box 2.

' As'herein shown, the improved fuel saving appliance is made in roundedform, so as to be adapted for use in stoves or furnaces having fireboxes of similar form, but it will be evident that the device may beotherwise formed the better to adapt it for use in connection withstoves and furnaces having rectangular or otherwise shaped fire boxes.When designed. for use in connection with stoves or furnaces havingcomparatively large fire doors, and when made in comparatively smallsizes, the improved fuel saving appliance may be constructed from anintegral piece or casting of metal, as indicated in Fig. 4 of thedrawings, but when made in larger sizes, and particularly when intendedfor use in connection with stoves and furnaces having comparativelysmall fire doors, I find it preferable to construct the appliance from aplurality of sections, as

indicated in Figs. 1, 2 and 3. As shown in sections 10, 10, the lateraledge portions whereof have reinforcing or strengthening flanges 11, 11adapted to be fitted closely adjacent to each other, and the upper parts12,

'12 whereof are adapted to be fitted together in a similar way toproduce the arched top -wall ofthe device. The lower partof each suchsection is also formed with a section of the flange 9, one end of suchsection having an upturned integral pin 18 and the opposite end thereofhaving an apertured lug 17 pro-' jecting from it in position to be.engaged upon the pin of an adjacent section so as to lock the sections10, 10' securely together at their lower parts. The upper parts 12, 12of the several sections 10, 10, are provided with lugs 14, 14,projecting from them at different elevations and apertured in registrywith one another for the passage of a bolt 15, having a nut 16 at itsupper end, whereby said sections are effectively locked together attheir upper parts in such a manner as to retain the pins 18, 18 at theirlower parts in locking '15 engagement with the apertured projections 17at the junctures of their flange sections. \Vhere this construction'isemployed, the appliance may be constructed with greater facility and maybe more readily introduced '20 into the stoveor furnace through the firedoors, the sections being connected together by means of the bolt afterhaving been separately introduced within the fire box.

From the above description of my improved fuel saving appliance it willbe seen that the device is. of an extremely simple and comparativelyinexpensive nature, and is particularly well adapted for use by reasonof the spreading of the burning fuel ad- 30,jacent to the heatingsurfaces, and consequent'economy in fuel consumption withoutinterference with the movement of the grate,

and it will also be obvious from the above description that the deviceis susceptible of considerable modification without material departurefrom the principles and spirit of the invention, and for this reason Ido not desire to be understood as limiting myself to the preciseformation and arrangement of the several parts of the device as hereinset 40 forth in carrying out my invention in practice. F

Having thus described my invention, what I claim and desire to secure byLetters Pat cut is p A fuel saving appliance adapted to be arrangedwithin the fire box of a furnace or the like, comprising a shell closedat its upper part and having perforated side walls and rovided at itslower part with a cir- 5o cum erential flange adapted to be rested uponthe grate, said shell being divided vertically into a plurality ofsections, each of said sections having a lug extended upwardly fromthe'flange adjacent one side of the section, a horizontally disposedapertured tongue extended outward from the flange at the opposite end ofthe section, the aperture of each tongue being adapted to accommodatethe upwardly extended lug on the succeeding section, and meansforuniting the sections at the top.

In witness whereof I have hereunto signed my name, in thepresence of twosubscribing witnesses.

, HERMAN F. NEHB. Witnesses:

EDWARD HUNTER, HENRY KILIAN.

